Graph api GET group/planner/plan fails because of permission. This flow used to work lately. Any change happenned on this?

Question

I have a Flow that retrieves a Token then uses it to perform Graph calls to groups API with the HTTP Premium connector.

I have a successful call to :

https://graph.microsoft.com/v1.0/groups/859[...]/owners

This shows my token is valid and has the permissions needed for this call.

Then I have a failing call to :

https://graph.microsoft.com/v1.0/groups/859[...]/planner/plans

You do not have the required permissions to access this item.

According to MS doc, the permission needed are :

/owners : Delegated (work or school account) Group.Read.All and User.ReadBasic.All, Group.Read.All and User.Read.All, Group.Read.All and User.ReadWrite.All, Group.Read.All and User.Read.All and Application.Read.All

/plans : Delegated (work or school account) Group.Read.All, Group.ReadWrite.All

Here is the permissions from the token I retrieve in my Flow :

"scope": "ChannelMember.ReadWrite.All Group.ReadWrite.All GroupMember.ReadWrite.All User.Read User.Read.All"

All of those permission has been granted in the Sharepoint admin console.

Any idea of what is going wrong here ?

Answer 1

The likely issue is that you are an owner of the group, but not a member (these are two separate collections of people). Currently Planner data for a Group can only be accessed by members. If you are an owner, you can also add yourself as a member to gain access.